Sorry, we have not watched this yet.
Zippy's teaching Bungle to sing, but George is sad as he doesn't think he's a good singer, so Alfred comes and teaches him how to sing. Geoffrey dresses up and sings and then Alfred reads a story called 'The Professer's Piano". Rod, Jane and Freddy sing "My Song Has Five Notes". George and Alfred sing "The Rainbow Song" and then everyone joins in.
Sorry, we have not watched this yet.